Question

Pre-calculus question

Answer 1

is the parent graph like this:
\[y = \left| x \right|\]

Answer 2

if yes, we can write this:
\[f\left( x \right) = \left| x \right|\]
and:
\[g\left( x \right) = 3\left| x \right| = 3f\left( x \right)\]
so at a generic point \(x\) graph of \(g(x)\) is stretched by a factor \(3\) with respect to the graph of \(f(x)\)

Answer 3

more precisely, I mean vertically stretched